Sediment Transport Capacity of the Flow

Chien, Ning; Wan, Zhaohui

doi:10.1061/9780784404003.ch11

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…Similar to the simpler flow cases previously discussed, equations ( 6)-( 10) will be used in conjunction with the velocity distribution profile associated with the important, from the practical point of view, open channel flow. The streamwise velocity profile chosen for this analysis is the log-law formula [22]:…”

Section: Error Estimation For Turbulent Open Channel Flowsmentioning

confidence: 99%

Quantification of the bias error induced by velocity gradients

Li¹,

Muste²,

Wang³

2007

Meas. Sci. Technol.

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A common aspect of intrusive and non-intrusive velocity instruments is that they sample the flow over a finite volume and report the time-averaged measurements in the volume's center. The presence of a velocity gradient in the measurement volume shifts the effective location of the reported quantity toward the high-velocity region. The reported quantity differs from the actual velocity in the measurement volume center commensurate with the size of the measurement volume, the direction and rate of the gradient, and the number of sample velocities. The paper analytically quantifies the bias in the location and magnitude of the mean velocity and turbulent intensities reported by instruments acquiring velocities in regions with velocity gradients. Procedures for bias removal/minimization and for estimating uncertainties due to the velocity gradient are described for several velocity distributions in open channel turbulent flows.

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Section: Error Estimation For Turbulent Open Channel Flowsmentioning

confidence: 99%

Quantification of the bias error induced by velocity gradients

Li¹,

Muste²,

Wang³

2007

Meas. Sci. Technol.

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Effects of bedform migration on nutrient fluxes at the sediment–water interface: a theoretical analysis

et al. 2021

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Dimensional analysis of natural debris flows

Zhou

2010

Can. Geotech. J.

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Debris flow is generally composed of a wide range of solid particles and viscous pore fluid. It flows at a high velocity down a slope channel. Interactions between solid and fluid phases affected by multiple parameters govern the rheological properties of debris flows. A dimensional analysis for a systematic study of the governing parameters is presented. Multiple dimensionless numbers with clear physical meanings are critically reviewed. The applications of field data to the studying of natural debris flows are demonstrated. Specific values of dimensionless numbers for classifying flow regimes of large-scale natural debris flows are obtained. Compared with previous small-scale physical model tests, this study shows that the contact friction between particles dominates in natural debris flows. In addition, the solid inertial stress due to particle collisions and the pore-fluid viscous shearing stress play key roles in governing the dynamic properties of debris flows. The channel width as a confinement to the flows can affect the solids discharge per unit width significantly. A dimensionless number related to pore-fluid pressure dissipation is also found that can satisfactorily distinguish between surge flows and continuous flows in the field.

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Sediment Transport Capacity of the Flow

Cited by 3 publications

References 3 publications

Quantification of the bias error induced by velocity gradients

Quantification of the bias error induced by velocity gradients

Effects of bedform migration on nutrient fluxes at the sediment–water interface: a theoretical analysis

Dimensional analysis of natural debris flows

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